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Allium fibrillum

fringed onion

Blue Mt. onion

Bulbs

1–5+; without cluster of basal bulbils; more or less globose;

outer coats enclosing 1 or more bulbs; brownish, membranous, reticulate;

cells very fine, often obscure; narrow; more or less transversely elongate, intricately contorted; without fibers.

Leaves

usually persistent, withering from tip by anthesis, 2;

blades solid; flat; more or less falcate, linear, channeled, 7–24 cm × 0.5–3 mm.

Scapes

persistent; solitary; erect; solid; terete or slightly flattened to very narrowly winged, 3–15 cm × 0.5–2 mm.

Umbels

persistent; erect; compact, 10–20(40)-flowered, hemispheric to globose;

pedicels 3–10 mm;

spathe bracts 2.

Flowers

5–8 mm;

tepals erect, lanceolate; more or less equal, white with prominent greenish or pink midribs;

margins entire;

apex obtuse to acuminate; more or less involute at tip;

stamens included;

ovary crestless or obscurely crested with 3 low processes;

stigma unlobed.

2n

=14.

Allium fibrillum

Allium dictuon

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Moist, shallow soils in rocky openings and grasslands in conifer woodlands. Flowering May–Jul. 800–2600 m. BW. WA; northeast to MT. Native.

Morphologically, A. fibrillum is similar to A. madidum. The latter, however has a basal cluster of bulbils.

[This taxon does not have a floristic treatment in Flora of Oregon.]

Source Flora of Oregon, volume 1, page 139
Nick Otting, Richard Brainerd, Barbara Wilson
Flora of Oregon, volume 1
Sibling taxa
A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. bisceptrum, A. bolanderi, A. brandegeei, A. campanulatum, A. cernuum, A. crenulatum, A. dictuon, A. douglasii, A. falcifolium, A. geyeri, A. lemmonii, A. macrum, A. madidum, A. membranaceum, A. nevadense, A. nevii, A. nigrum, A. parvum, A. peninsulare, A. platycaule, A. punctum, A. robinsonii, A. sanbornii, A. schoenoprasum, A. siskiyouense, A. tolmiei, A. triquetrum, A. unifolium, A. validum, A. vineale
A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. bisceptrum, A. bolanderi, A. brandegeei, A. campanulatum, A. cernuum, A. crenulatum, A. douglasii, A. falcifolium, A. fibrillum, A. geyeri, A. lemmonii, A. macrum, A. madidum, A. membranaceum, A. nevadense, A. nevii, A. nigrum, A. parvum, A. peninsulare, A. platycaule, A. punctum, A. robinsonii, A. sanbornii, A. schoenoprasum, A. siskiyouense, A. tolmiei, A. triquetrum, A. unifolium, A. validum, A. vineale
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